Printing press



v I ma ma )N. M. KELLY PRINTING PRESS" Filed Aug. 6, '1921 5 Sheetstheeti Patented Get. 2, 1923.

n s We.) 51 ii-MA hhhh i WILLIALM M. KELLY, OF JER-SEYCITY, NEW JERSEYL rnmrme rnrss.

application filed August 6, 1921. Serial No. 490,291.

" T'o-dll whom z'tmay concern:

, Be it known that I, WILLIAM M. KELLY,

a-"citizen of the United States, and resident of'Jersey City, Hudson County, State of New Jersey, have invented certainnew and useful 'I-mprovements'in Printing Presses,

"nism the stopping of the press and the throwing on and off of the impression.

' "The principal objects of the invention a I "1'. To provide .means so that periodically a'sheet feeding operation of the mechanism may be avoided.

2. Toprovide a sheet feeding mechanism which may be thrown from single to double rolling while the mechanism is in operation. 3. To provide a sheet feeding mechanism in which the avoiding of sheet forwarding operations'is controlled by the absence of a sheet on the feed board. I

1. In a sheet feeding mechanism having means to stop the mechanism when a sheet is absent on the feed board when due, means torender the stopping means inoperative when the mechanism is'double rolling, in timed relation with the avoided sheet for- 2 5. Ina printing press, printing mecha- I nisin, means to renderthe printing mecha- '51: actuatd'by the last mentioned means to ni'smlinoper'ative if a sheet is not present on 'the feedboard When due, and means cause-the sheet feeding mechanism to avoid a forwarding operation.

6."Inj aslieet feeding mechanism, having means to stop the mechanism if a sheet is not=present on the feed board when due,

means actuated by the first mentioned means to 'cause the sheet forwarding means to avoid aforwarding operation.

' 7. An improved-sheetv detector and crum-- l d h ettdetectmfi 'Oth'er objects and features of novelty will be apparent from the description taken in connection'with the drawings, in Which-- Figure 1 is a more or less diagrammatic view showing in side-elevation one embodiment of the present invention, the parts being'shown'in the positions which they occupy'in the'normal operation ofthe press, thatpis'single rolling, a sheet just being forwarded from the top of the pile;

communication with the atmosphere.

Figure 2 is a similar view showing a sheet just after it has tripped the detectors and they have gone to the high position;

Figure 3 is a similar view showin sheet at the time it is seized gripper fingers;

the by the cylinder Figure 4 is another diagrammatic view illustrating the arrangement of the parts when the mechanism is double rolling or in other words, when the sheet forwarding means is periodically avoiding a forwarding operation, and- 1 Figure 5 is another view showing the parts in double rolling position.

Referring to the drawings the numeral indicates a pile of sheets which is to be fed one by one to the cylinder 11 of the press. The means for doing this illustrated in the drawings is pneumatic and comprises a pair of rotating wheels 12 having a series of radial holes 13 in their rims and a mouth piece 14,- in communication with a suction pipe 15. The wheels 12 are rotated in any suitable manner so that the apertures 13 are carried by the nozzle or mouth piece 14 whereupon the suction causes the forwardin of the top sheet of the pile. When not fee ing a sheet the suction in pipe 15 may be broken by placing the pipe in this purpose a valve 16 is provided and is periodically opened through the instrumentality of lever 17 actuated by cam 18 rotating at the same speed as the suction wheels 12. The details of the foregoing feeding means are full described in my copending application g I 893filed September 30, 1920.

In this manner the sheet is forwarded to a feed board indicated at 19. As the sheet approaches the cylinder 11 it swings the detector 20 to the left as viewed in Fig. 1 about the pivot 21, thus freeing the detector'from the stationary stop'or shoulder 22 and permltting spring 23 to swing the detector arm '24 and associated parts to the right as viewed For erial Number 413,-

with a pivoted arm 26 having a roller 27 cooperating with a cam 28 on a shaft 29. The cam is shaped and so timed that the spring 23 is permitted to raise the detector stop 22 will engage an aperture in the de'- tector to lock the same so that spring 23 can not swing arm 24 and hence roller 27 will be held out of engagement with the low part of the cam.

Means is provided whereby if a sheet is trolled by the detector 20. If a sheet on the feed board strikes the detector when due the rod moves toward the right as viewed inFig. 1 and pin strikes the dog 31 thereby turning the same on its pivot 32 so that it fails to operate the impression throw-off, the press stopping means or the valve 16.

On the other hand if a sheet is not present on the feed board when due the detector will not be turned to the left and finger 31 will not be pushed into the position indicated in Fig. 1.. On the contrary it will hold its normal position asshown in Fig. 5 the spring 33 turning it on its pivot so that its lower end normally rests on the top of the rod 34. The dog 31 is'carried at the free end of alever 35 having a roller 36 coo er-ating with cam 37 secured to shaft 29. 1 spring 38 forces lever 35 in the direction to hold the roller in contact with the cam. \Vith the do 31 in the position shown in Fig. 5, it wi l transmit movement from the cam to the rod 34 thereby depressing the latter. This rod at its lower end is connected to one end of the lever 39the other end by a link 40 being connected to an arm 41 on shaft 42 which controls the impression, the specific structure beingshown and described in my 00- pending application Serial No. 490,290 filed August 6, 1921. Hence when the sheet is absent from the feed board when due, the

means for throwing on and off the impression will be thrown out of operation.

The rod 34 adjacent its lower end also has a stop switch pawl 43, normally positioned so that its lower end is directly over the plunger 44 of the start and stop switch 45. Downward movement of the rod 34 through pawl 43 depresses the lunger 44 thereby actuating the stop switcli press. 5

The movement of the-rod 34 also opens valve 16. Thus an air trip pawl 46 is pivvoted at 47 to the rod 34 and at its lower end contacts with a lever 48 pivoted at 49 and connected by a link 50 to an arm 51 secured to turn with the cam actuated lever 17. The

connection between the upper end of link 50 the arm 51 consists of a slot 52 in the link and a-pm 53 on the arm disposed in the 45 and stopping the slot. Normally, that is whenthe, valve is closed, the-pin 53 is at the lower end of the slot, the length of the slot being such that the valve may be opened by movement of lever" 11 without restraint. 0n the other hand When rod 34 is depressed through the transmitting means just described the link 50 turns arm 51 and opens valve 16 thereby I placing the suction means in communication with the atmosphere and rendering the sheet forwarding'means inoperative.

In Fig. 1 of the drawings it will be noted that sheet A has just been taken from the.

pile and is being forwarded to the feed board. A previous sheet B is on the feed board and another sheet 0 is on the cylinder at about theposition indicated. It will be noted that the detector 20 is in'elevated position that the dog 31-, has been knocked out of contact with the top of rod 34 and hence has been rendered inoperative to actuate any of the devices controlled thereby.

In Fig. 2 sheet O of Fig. 1 has been taken from the cylinder, sheet B has just knocked out the detector 20 and sheet Ahas advanced to the position shown.. It will be noted that dog 31 has been turned on its pivot but has not yet been depressed by cam 37.

- Fig. 3 shows sheet B seized by the cylinder gripper fingers and sheet A advancing on the feed board. The sheet detectors arestill 4 up and dog 31 is just about to be depressed.

Figs. 1 to 3 relate to single rolling or con;

tinuous feeding of the sheets from the pile. Figs 4 and 5 on the other hand relate to double rolling. Referring to Fig. 2 it will be noted that if sheet B had not struck the detector, among other things valve 16 would have been held open during the period when the sheet subsequent to A would be fed from the pile. In other words, the detector controls the forwarding of the third subsequent sheet, that is to say sheet B controls the forwarding of the sheet immediately following sheet A. This feature is of importance in connection with the double rolling.

Referring now to Fig, 4 certain adjust- I mcnts must be made before the press will double roll. Disposed alongside rod 34 is. a

parallel rod 54 frictionally guided thereon by the collar 55. At the upper end of this rod 54 is a pivoted dog 56v which for single rolling is retracted as shown in Figs. 1, 2

and 3. For double rolling this dog is turned about its pivot 57 to the position shown in Figs. 4 and 5, forming an extension of the rod 54. At its upper-end this dog. 56 has a projection 58 which is adapted tocOntactflga with a fixed bracket 59a) limit its downward movement. At its lower end the rod 54 is connected to a control lever 60 pivoted asat 61 adjacent the lower end of rod 34 but be}; tween said lower end and the pivot point of pawl 43. When the rod 54 is depressed a pin parts as described. In double ro 62 at the tip of control lever pushes pawl 43 to the rightas viewed in Fig. 4 so that if rod 34 is thereafter depressed the lower end of pawl 43 will be out of register with the switch plunger 44 and will pass down heside the same without operating the stop switch, as shown in Fig. 5.

Referring now to the operation of the mechanism when double rolling, in order to start the machine double rolling it is first necessary that it be made to miss or avoid a sheet forwarding operation. First, air trip pawl 46 and pawl 43 are moved to the dotted line positions of Fig. 3. Then the machine is set in operation and by the operator that sheet C is on the cylinder in both thesefigures and sheet A is just being forwarded from the pile. In the double rolling of Fig. 4 however, sheet B is absent because of the double rolling. The sheet C tripped the detector and moved pawl 31 .so that when-it was depressed by cam 37 it contacted with the projection 58 of dog 56 and depressed rod 54 thereby turning pawl 43 to an inoperative position so that it will not actuate the stop switch. Now in single rolling sheet B would strike the detector and operate the ling however there is no sheet B and consequently the detector will not be swung to the left as viewed in Figs. 4 and 5. Referring to Fig. 5 it will be noted that sheet A has advanced on the feed board. As there was no sheet B ahead of A the detector 20 is caught by stop 22 and consequently dog 31 assumes its normal position shown in Fig. 5 so that when cam 37 depresses the dog 31 the latter is in contact with the upper end of rod 34 and depresses the latter. This movement however does not stop the mechanism for the reason that pawl 43 has been moved to inoperative position as previously described. However the downward movement of rod 34' through air trip pawl 46 opens air valve 16 thereby avoiding a sheet forwarding operation. In other wordsthe sheet which would be fed in single rolling directly after sheet A will not be forwarded. Sheet A will advance over the feed board and strike the detecmachine miss forwarding a'sheeta Thereafter it will automatically forward alternate sheets onl Furthermore, the machine may be shifte from single to double rolling or vice versa while it is in operation.

The lever to which is pivoted the detector-2O hasashoiilder'66 "for a purpose presently to be described. The cross member 67 carries a bracket68 on which is pivotally mountedthe crumpled sheet detector 69. The tail end ofithis' detector is formed with a shoulder 7(l.fwhich holds the latch 71 cocked. A spring 72 tends to turn the latch so that, when it is tripped, it will engage the shoulder 66 and hold the lever 24 from having its normal movement in the'same manner as the sheet detector 20 holds this lever when the detector engages the shoulder 22. Thus, if the detector 69 is raised by a crumpled sheet, in due course thereafter-theimpression means will be thrown out and the press stopped;

Having described the invention what is claimed as new and desired to be secured by Letters Patent is:

1. The combination of sheet forwarding means, an impression cylinder, means for raising and lowering said cylinder, means controlling the operation of said mechanism by the presence of a sheet in position to be taken by said cylinder and means governed by said controlling means to avoid alternate forwarding operations of said forwarding means.

2. The combination of sheet forwarding means, an impression cylinder. mechanism for raising and lowering said cylinder, means controlling the operation of said mechanism by the presence of a sheet in position to be taken by said cylinder and means governed by said controlling means to pee riodically avoid forwarding operations of said forwarding means.

3. The combination of sheet forwarding means, an impression cylinder, mechanism for.throwi'ng the impression on and off, moans controlling the operation of said mechanism by the presence of a sheet in position to be taken by said cylinder and means governed by said controlling means to avoid alternate forwarding operations of said forwarding moans.

4. The combination of sheet forwarding means, an impression cylinder, mechanism for throwing the impression on and off, means controlling the operation of said mechanism by the presence of a sheet in position to be taken by said cylinder and means governed by said controlling means to periodically avoid forwarding operations of said forwarding means.

5. The combination of sheet forwarding means ineffective.

eration of said mechanism, meanscontrolled by the sheets to render said preventing means ineffective,- and means controlled by said preventing means to periodically render the operation of said forwarding 6. In a sheet feeding mechanism, in combination, sheet forwarding means, printing mechanism, means to render said mechanism inoperative when a sheet is not delivered to said mechanism, and means operated by the means last recited to periodically render the operation of said forwarding means ineffective.

7. In a sheet forwarding device, in combination, sheet forwarding means, manually controlled mechanism to avoid a sheet forwarding operation, and means adapted to be manually adjusted to thereafter periodically render operative said mechanism.

- a sheet on the board to cause the forwarding tively.

means to miss a forwarding operation, and thereafter periodically miss a sheet forwarding operation.

10. The combination of a sheet forwarding mechanism, a feedboard, and'means controlled by the presence and absence of a sheet on the feed board to render said mechanism inoperative and operative respec- 11. A machine of the character described including in combination, a feed board, means to forward sheets to said board at regular intervals, means rendered operative bythe absence of a sheet when due on the feed board to stop the machine, and means to rendersaid stop-ping means inoperative at regular intervals to permit the periodic missing of a feeding operation.

12. In a machine of the character described,;in, combination, a feed board, means to forward sheets to said board at regular intervals, means to stop the machine renddered inoperative by the presence of a sheet on.the.board when due, means to avoid alternate forwarding operations of said for-. warding-means, andmeans to render said stopping means inoperative when the non fed sheets would normally be due on the board.

13. In a machine of the character described, in combination, a feed board, means to forward sheets to said board at'regular intervals, means to stop the machine rendered operative'by the absence of a sheet on the board when due, means to avoid" alter nate forwarding operations of said forward ing means and means to-render said stop-" ping means inoperative for the said avoid ed alternate forwarding operations;

14. In a sheet feeding mechanism, income bination, means to forward sheets from-a; pile, and means to periodically avoid-a forwarding operation of said forwarding means constructed and arranged to be rendered 'op' erative while the mechanism is in operation 15. In a sheet feeding mechanism, in come bination, a feed board, pneumatic meansjto" 'forward sheets from a pile to said-boardat regular intervals, a valve controlling" saidpneumatic means, and means to periodicallyopen said valve to avoid forwarding operations of said forwarding means rendered op erative by the periodic absence of a sheeton- .the feed board.

means inoperative in timed relation to the period when sheets are not forwarded:

18. Ina sheet feeding mechanism," in com bination, a feed board, means to forward sheets to said board at regular intervals, and

means controlled by the periodic absence "of' a sheet on the feed board to avoid' a subse quent forwarding operation of the f'orw'v tlrd ingmeans. v

19. In a printing press, in combmat oma feed board, printing mechanism,'meansfto forward sheets-to said board; means' to render said printing mechanism inoperativeincluding a cam, a normally stationary member and an element for transmitting movement from the cam to thememb'efifl means to move said element'toinoperative position when a sheet is present on the board. when due, and means'connecting'said' member and sheet forwardingmeans to render-- the latter inoperative when the member is" moved.

20. In a printing press, incombination, a feed board, printing mechanisnifmeans to" forward sheets. to said board," a normally'f stationarymember, a cam, rotating in timedrelation with the" cycle of movement "ofithepress, an element normally'in operative po sition to transmit movement from .said "cam';

to said member, means to move said element" to inoperative position if a sheet is present on-the board when due, means connecting themember and sheet forwarding means to render the latter inoperative when the member; is--moved, and means actuated by said member to render the printing mechanism inoperative.

"-EZLIn :a printing press, in combination, a-feed board, printing-mechanism,- means to forward sheets to said board including a valve,- anormally stationary member, a cam rotating in timed relation with the cycle of movements of the press, an element normally in operative position to transmit movement from said cam to said member, means to move said element to inoperative position ifta sheetis' present on the board when due, means connecting the member and valve to open the-latter and render the sheet forwarding means inoperative when the memher is moved, and means actuated by said member to render the'printing mechanism inoperative.

2-22 Ina printing press, in combination, a feed -:board, printing mechanism, sheet forwar-ding means, a normally stationary rod, a rotating cam, an element normally operative totransmit movement from the cam to the rod, a second rotating cam, a member actuated by said second cam, means for detecting-the absence ofa sheet on the feed board, and connected with said member so as to prevent the latter from having its normal movement if a sheet is not present on the feed board whendue, means on said memher to move said element'to inoperative position when the member moves, and means actuated by movement of said rod to render V the sheet forwarding means and printing mechanism inoperative.

23. In a printing press, in combination, a feed board, printing mechanism, a stop switch, sheet forwarding means, a normally stationary rod, means to actuate said rod if a sheet is not present on the feed board when due, and means actuated by said rod to render the sheet forwarding means and printing mechanism inoperative and to operate said switch to stop the press.

24. A printing press including in combination, a feed board, sheet forwarding means, means to periodically avoid asheet forwarding operation, a stop switch, means to actuate said switch if a sheet is not present on the feed board when due, and means to render said switch actuatingmeans inoperative in timed relation with the period when said sheet forwarding means avoids a sheet forwarding operation.

25. A printing press including in combination, a feed board, sheet forwarding means, means to periodically avoida sheet forwarding operation, press stopping means, means to actuate saidstopping means if a sheet is not present on the feed board when due,.and means to render said stop actuating means inoperative in timed relation 'With the period when said sheet forwarding means avoids a sheet forwarding-operation.

26. In a printing press, in combination, a

feed board, sheet forwarding means, press stopping means, means to avoid alternate forwarding operations of said sheet forwarding means, a pair of members the first adapted to actuate said stopping means, and the second to render the first member inoperative to actuate the stopping means, means to actuate said first member if a sheet is not presenton the board when due, said;

last mentioned means also arranged to actuate the second 'member if a sheet is present when due so that the press will not be stopped by theabsence of a sheet because of the avoided sheet forwarding operation.

27. Ina printing press, in combination, a feed board, sheet forwarding means, press stopping-means, means to avoid alternate stopped by the absence of asheet because of the avoided. sheet forwarding operation, said secondmember being normally inoperative and adapted to be manually adjusted for operation.

inoperative in timed relation to the avoided sheet forwarding operations.

29. In a printing press, in combination, a feed board, sheet forwarding means, press stopping means, a rod having a pawl adapted to actuate said stopping means, means to actuate saidrod if a sheet is not present on the board when due, a second rod slidably carried by the first having means to move the pawl out of operative position,

' due, a second rod having means to move the pawl out of operative position, means actuated by said first rod to open said valve to avoidalternate forwarding operations of said forwarding means, and means to operate said second rod to render the pawl in operative in timed relation to the avoided sheet forwarding operations.-

31. In a sheetfeeding mechanism, in c0mbination, rotating cam means, a member actuated by said cam means, a crumbled sheet detector, a latch, and means actuated by said detector to trip said latch and prevent said member from having its normal movement.

82. In a sheet feeding mechanism, in com bination, a feed board, meansrfor forwarding sheets to said board, means to render said forwarding means inoperative, rotating cam means, a member actuated by said cam means to render said second mentioned means inoperative, a crumbled sheet detector, a latch, and means actuated by said detector to trip said latch and prevent said member from having its normal movement.

' aeeeme crumpled sheet detector to-tr'ip said latch and prevent normal movement of said member.

34:. In sheet feeding mechanism, feed board, means to forward sheets to said board, cam means, a member controlling the operation of said sheet feeding means and actuated .by said cam means, an element condetector to trip said latch and hold said element against movement.

In testimony whereof I hereunto afix my signature.

WILLIAM KELLY, Q 

